Air-piping device in connection with sunken submarine boats



S ep t. 9, 1930. B. LIESKE 1,775,595

AIR PIPING DEVICE IN CONNECTION WITH SUNKEN SUBMARINE BOATS Filed July 6, 1929 2 Sheets-Sheet 1 B. LIESKE Sept. 9, 1930.

AIR PIPING DEVICE IN CONNECTION WITH SUNKEN SUBMARINE BOATS Filed July 6, 1929 2 Sheets-Sheet 2 Patented Sept 9, 1930 1 UNITED STATES,

,BERNHARD r nsxn, orrLAUnN, Gem/1am Application filed July 6', 1929, Serial No.

My invention relates to improvements in air piping devices for sunken ships, and more particularly forsunken submarine boats and it consists in certain novel features of constru-ction and adaptability, all as more fully hereinafter set forth and claimed.

The primary object sought to be attained by the invention forming the subject of the present application for patent, is tocontemplate means for connecting easily and quickly to the sunken boat a pipe whereby it may be possible to force fresh air into the interior of the boat.

In the accompanying drawings: Figure 1 is a longitudinal section through the device applied to the boat wall, and

Figure 2 is a corresponding section thereof, taken at aright angle to Figure 1.

Referring to the drawings, the device 0011- sists of a casing a in the shape shown, in the interior of which is arranged in suitable bearings and in axial direction, a boring-bar I), made hollow and which may be driven by any appropriate means, for instance by an electromotor 0 and ,by means of a'toothed' gearing. The latter is composed of a toothed wheel p keyed to the shaft of the motor, and of a driven toothed wheel which is slidably' mounted on the shaft of the boring-bar b.

The casing a is provided at its top with a flanged socket 0? adapted to receive an .air inlet pipe, not shown in the drawing, and at the outer wall of the sunken boat, there are arranged electro-magnets designated by e. Formed in the base of the casinga is an opening through which passes the spindle b, the latter entering a short cylinder f fixed to the said casing by screw-bolts and carrying on its periphery a rubber ring 9 for tightening purposes'when the device is being applied to the wall 71 of the sunk boat. The projecting end of the spindle is provided, on the one hand, 1' with a collar or flange k and'on the other hand and beneath the said flange with a thread my The said boring-baris under the action of i a spiral spring h which bears with its upper extremity against the toothed wheel p and with its lower extremity against the adjusting ring n, the axial displacement of the latter being limited by a stop 0 and the said 576,440,iand inGermany .Tune27, 1928.

spring serving'the purpose of pressing the spindle, against the wall z' of the boat.

- 'It will beof advantage to have the device mounted on a float so as to enable the diver to handle the deviceeasily and quickly.

. pThe operation is as follows: After having the device applied to the outer surface of the boat wall, the diver switches on the electric current and immediately the electro-magnets are holding the device pressed against the boat wall; then the motor is started. As soon as the revolving spindle has perforated the boatwall; the collar or flange 7?, under the action of the' spring h, is pressed against the outer surface of the ,sai dwall andthe current become-s interrupted automatically, this interruption being effected by any known means. The crew by screwing up a split nut on the thread m and providing the said nut with packing material, prevents thereby the spindle from being withdrawn. The communication with the outer air is thus established, and fresh airwillenter the interior of the boat.

What I claim as new, is

1. An air piping device in connection with sunken submarine boats, comprising a casing, a boring-bar arranged axially-therein and made hollow, a toothed gearing driven by an electro-motor, an adjusting ring mounted on the boring-bar, a spiral spring round the shaft and arranged between the said adjusting ring and the said gearing, a stop limiting the displacement of the said adjusting ring, an opening in the base of the casing for the'passage of the spindle, a flange on the upper part of the free spindle end and a thread cut in the shaft, the said thread being arranged between theflange and the extremity of the spindle.

2. An air piping device in connection with sunken submarine boats, comprising a casing, a flanged socket at the top of the said casing and adapted to receive an air inlet pipe, a boring-bar arranged axially in the said casing and made hollow, an electro-motor, a toothed gearing driven by the said 1110- tor and composed of a toothed wheel keyed to the shaft of the said motor and of a toothed wheel slidably mounted on the said boringbar, an adjusting ring mounted on the boring-bar, a stop limiting the displacement of the said adjusting ring, aspiral spring round the shaft and arranged between the said adjusting ring and the slidably mounted toothed wheel, an opening in the base of the casing for the passage of the spindle, a flange on the upper part of the free spindle end, a thread cut in the shaft and arranged between the said flange and the extremity of the spindle, the said thread being intended to reeeive a split nut, a cylindrically shaped socket, screw-bolts fixing the said socket to the base of the casing, a rubber ring on theperiphery of the saidsocket and serving for tightening purposes when the device is applied to the outer surface of the boat wall, electro-magnets mounted on the said boat wall and pressing the device against the latter, the electrically driven boring-bar being, under the action of its spiral spring, constantlypressed against the said wall, the said boring-bar perforating the wall of the boat and thus establishing a communication between the outer air and the interior of the boat the fresh air to be introduced passing through the hollow shaft of the said horing-bar. V

Iii-testimony whereof I have afiixed my signature.

BERNHARD LIESKE. 

